Ask around where you'll be climbing at most of the time. Try other peoples cam if you can, see what you like or dislike about them. Go to the different brands websites and soak up all the info you can.

BD (.5 - 3) cams are the normal goto anymore and they are nice, but of the 50+ cams I own, only five are BD's. It's all relative, so the more flavors you can try the more likely your to find what fits your tastes and mitts best.